Current Extreme Heat Activity
Extreme heat events are prolonged periods of excessively hot weather that can cause heat-related illness and death, strain power grids, and damage infrastructure. Heat waves are the leading weather-related cause of death in the United States, with urban heat islands amplifying temperatures in cities.
Showing active extreme heat events worldwide
Open full-screen map →Notable Recent Events
Recent extreme heat events that have impacted the United States, ranked by severity and population exposure.
Tampa, FL
February 22, 2026
Cold Weather - Southwest and West Central Florida, United States
Impact: 2,970,000 people exposed; $321,389M capital exposed
Sacramento, CA
February 19, 2026
Cold Weather - Northern Sierra Nevada and Western Plumas County, California, United States
Impact: 48,000 people exposed; $5,774M capital exposed
San Francisco, CA
February 19, 2026
Cold Weather - San Francisco Bay and North Monterey Coast, United States
Impact: 4,350,000 people exposed; $1,186,959M capital exposed
San Jose, CA
February 19, 2026
Extreme Cold - San Francisco Bay Area and Interior Monterey County, California, United States
Impact: 2,100,000 people exposed; $471,683M capital exposed
Oakland, CA
February 17, 2026
Cold Weather - North Bay and Southern Salinas Valley, California, United States
Impact: 873,000 people exposed; $180,863M capital exposed
Boston, MA
February 6, 2026
Cold Weather - Middlesex County, Massachusetts, United States
Impact: 48,000 people exposed; $8,043M capital exposed
Miami, FL
February 2, 2026
Cold Weather - South Florida, United States
Impact: 462,000 people exposed; $51,556M capital exposed
New Orleans, LA
February 1, 2026
Cold Weather - Southeast Louisiana and Southern Mississippi, United States
Impact: 635,000 people exposed; $58,896M capital exposed
Tampa, FL
January 31, 2026
Cold Weather - Tampa Bay / West Central Florida, United States
Impact: 829,000 people exposed; $130,485M capital exposed
Virginia Beach, VA
January 31, 2026
Cold Weather - Northeastern North Carolina _ Southeastern Virginia, United States
Impact: 787,000 people exposed; $170,236M capital exposed
Columbus, OH
January 30, 2026
Extreme Cold - Central and Southwest Ohio, United States
Impact: 4,970,000 people exposed; $611,781M capital exposed
Nashville, TN
January 30, 2026
Cold Weather - Middle Tennessee, United States
Impact: 2,770,000 people exposed; $287,569M capital exposed
New Orleans, LA
January 30, 2026
Extreme Cold - Southeast Louisiana, United States
Impact: 317,000 people exposed; $34,322M capital exposed
Oklahoma City, OK
January 30, 2026
Cold Weather - Western and central Oklahoma and northern Texas, United States
Impact: 2,480,000 people exposed; $252,983M capital exposed
Baltimore, MD
January 26, 2026
Cold Weather - Washington metro (DC, MD, Northern VA), United States
Impact: 8,890,000 people exposed; $2,261,237M capital exposed
Jacksonville, FL
January 26, 2026
Cold Weather - Southeast Georgia, United States
Impact: 381,000 people exposed; $44,488M capital exposed
Columbus, OH
January 25, 2026
Extreme Cold - Eastern IN, Northern KY, Central/Southern OH, United States
Impact: 5,950,000 people exposed; $712,775M capital exposed
Columbus, OH
January 25, 2026
Extreme Cold - East-Central IN, Northern KY _ Central/SW OH, United States
Impact: 5,950,000 people exposed; $712,775M capital exposed
Kansas City, MO
January 23, 2026
Cold Weather - Eastern Kansas and Central Missouri, United States
Impact: 2,280,000 people exposed; $262,380M capital exposed
Oklahoma City, OK
January 23, 2026
Extreme Cold - Central and Western Oklahoma; Northern Texas, United States
Impact: 2,420,000 people exposed; $247,574M capital exposed
Seattle, WA
January 23, 2026
Cold Weather - Puget Sound / Seattle area, Washington, United States
Impact: 3,120,000 people exposed; $651,192M capital exposed
Tulsa, OK
January 23, 2026
Extreme Cold - Northeast and east-central Oklahoma _ northwest/west-central Arkansas, United States
Impact: 2,350,000 people exposed; $225,747M capital exposed
Chicago, IL
January 22, 2026
Extreme Cold - Central Cook County, Illinois, United States
Impact: 3,260,000 people exposed; $503,525M capital exposed
Indianapolis, IN
January 22, 2026
Cold Weather - Central Indiana, United States
Impact: 2,550,000 people exposed; $272,438M capital exposed
Omaha, NE
January 22, 2026
Cold Weather - Southwest Iowa and eastern Nebraska, United States
Impact: 1,470,000 people exposed; $161,546M capital exposed
Portland, OR
January 21, 2026
Cold Weather - Northwest Oregon _ Southwest Washington, United States
Impact: 2,450,000 people exposed; $379,924M capital exposed
Indianapolis, IN
January 18, 2026
Cold Weather - Central Indiana, United States
Impact: 2,890,000 people exposed; $299,513M capital exposed
Jacksonville, FL
January 18, 2026
Cold Weather - Northeast _ north-central Florida, United States
Impact: 2,600,000 people exposed; $302,578M capital exposed
Oakland, CA
January 8, 2026
Extreme Cold - San Francisco Bay Area _ Central Coast, California, United States
Impact: 6,570,000 people exposed; $1,689,571M capital exposed
Indianapolis, IN
December 13, 2025
Extreme Cold - Central Indiana, United States
Impact: 2,280,000 people exposed; $243,894M capital exposed
Long Beach, CA
October 27, 2025
Heat - Ojai Valley area, California, United States
Impact: 9,940,000 people exposed; $2,958,558M capital exposed
San Diego, CA
October 27, 2025
Heat - Southern California, United States
Impact: 7,490,000 people exposed; $1,760,728M capital exposed
San Francisco, CA
September 22, 2025
Heat - San Francisco Bay Area, United States
Impact: 5,800,000 people exposed; $1,570,080M capital exposed
Seattle, WA
September 1, 2025
Heat - Foothills and Valleys of Western Washington, United States
Impact: 837,004 people exposed; $95,103M capital exposed
Fresno, CA
August 31, 2025
Heat - Central California, United States
Impact: 3,010,000 people exposed; $638,788M capital exposed
San Diego, CA
August 31, 2025
Heat - Southern California, United States
Impact: 7,510,000 people exposed; $1,762,829M capital exposed
Miami, FL
August 26, 2025
Heat - Miami-Dade and Broward Counties, Florida, United States
Impact: 4,410,000 people exposed; $654,349M capital exposed
Portland, OR
August 21, 2025
Excessive Heat - Columbia River Gorge and East Portland Metro, United States
Impact: 183,000 people exposed; $31,576M capital exposed
Seattle, WA
August 21, 2025
Excessive Heat - Puget Sound Foothills and Valleys, Washington, United States
Impact: 837,004 people exposed; $95,103M capital exposed
Long Beach, CA
August 20, 2025
Excessive Heat - Southern California, United States
Impact: 3,720,000 people exposed; $1,183,595M capital exposed
Sacramento, CA
August 20, 2025
Heat - Northern and Central California Valleys, United States
Impact: 4,680,000 people exposed; $1,092,698M capital exposed
Las Vegas, NV
August 19, 2025
Excessive Heat - Northwest Arizona, Southeast California, Southern Nevada, United States
Impact: 3,090,000 people exposed; $372,153M capital exposed
Las Vegas, NV
August 19, 2025
Excessive Heat - Northwest Arizona, Southeast California, and Southern Nevada, United States
Impact: 3,090,000 people exposed; $372,153M capital exposed
Mesa, AZ
August 19, 2025
Excessive Heat - Sonoran Desert Region, Arizona, United States
Impact: 1,030,000 people exposed; $70,479M capital exposed
Miami, FL
August 19, 2025
Heat - Southeast Florida, United States
Impact: 5,880,000 people exposed; $854,264M capital exposed
San Diego, CA
August 19, 2025
Heat - San Diego County Inland Valleys, California, United States
Impact: 1,050,000 people exposed; $228,186M capital exposed
Louisville, KY
August 18, 2025
Heat - South Central Indiana and Kentucky, United States
Impact: 1,670,000 people exposed; $195,046M capital exposed
Memphis, TN
August 18, 2025
Excessive Heat - Eastern Arkansas, Northern Mississippi, Southeast Missouri, Western Tennessee, Unit
Impact: 1,830,000 people exposed; $223,016M capital exposed
Memphis, TN
August 17, 2025
Excessive Heat - East Arkansas, North Mississippi, Southeast Missouri, West Tennessee, United States
Impact: 1,830,000 people exposed; $223,016M capital exposed
Oklahoma City, OK
August 17, 2025
Heat - Central and surrounding Oklahoma, United States
Impact: 1,300,000 people exposed; $140,653M capital exposed
Omaha, NE
August 16, 2025
Heat - Southwest and central Iowa, eastern Nebraska, United States
Impact: 1,000,000 people exposed; $109,518M capital exposed
Dallas, TX
August 15, 2025
Heat - Arkansas, Oklahoma, and Texas, United States
Impact: 9,500,000 people exposed; $1,066,871M capital exposed
Arlington, TX
August 14, 2025
Heat - North Central and Northeast Texas, United States
Impact: 7,890,000 people exposed; $908,727M capital exposed
Jacksonville, FL
August 12, 2025
Heat - Northeast Florida and Southeast Georgia, United States
Impact: Impact data not available
Tulsa, OK
August 7, 2025
Extreme Heat - Central Plains, United States
Impact: 1,240,000 people exposed; $124,012M capital exposed
New York, NY
July 24, 2025
Extreme Heat - Northeastern United States
Impact: 54,500,000 people exposed; $15,778,747M capital exposed
Phoenix, AZ
June 24, 2025
Extreme Heat - Southwest United States
Impact: 5,966,290 people exposed; $663,297M capital exposed
Baltimore, MD
June 22, 2025
Extreme Heat - Eastern United States
Impact: 91,006,790 people exposed; $21,897,084M capital exposed
Mesa, AZ
June 8, 2025
Exterme Heat - Western United States
Impact: 6,795,200 people exposed; $717,822M capital exposed
San Antonio, TX
May 12, 2025
Extreme Heat - Southwest Texas, United States
Impact: 749,000 people exposed; $96,292M capital exposed
Omaha, NE
July 11, 2024
Extreme Heat - Central United States
Impact: 11,700,000 people exposed; $1,287,571M capital exposed
Philadelphia, PA
July 11, 2024
Extreme Heat - Eastern United States
Impact: 56,700,000 people exposed; $12,824,176M capital exposed
Baltimore, MD
June 16, 2024
Extreme Heat - Northeastern United States
Impact: 76,736,000 people exposed; $17,374,827M capital exposed
Arlington, TX
July 7, 2022
Extreme Heat - Northeast Texas, United States
Impact: Impact data not available
Mesa, AZ
June 14, 2022
Extreme Heat - Arizona Desert, United States
Impact: Impact data not available
Kansas City, MO
April 12, 2022
Extreme Cold - Kansas and Missouri
Impact: Impact data not available
Philadelphia, PA
August 9, 2021
Extreme Heat - Northeastern United States
Impact: Impact data not available
Tulsa, OK
August 8, 2021
Extreme Heat - Northeastern Oklahoma, United States
Impact: Impact data not available
Long Beach, CA
September 30, 2020
Extreme Heat - Southwestern California, United States
Impact: Impact data not available
Virginia Beach, VA
September 2, 2020
Extreme Heat - Eastern United States
Impact: Impact data not available
Virginia Beach, VA
July 20, 2020
Extreme Heat - Eastern United States
Impact: Impact data not available
Kansas City, MO
July 16, 2020
Extreme Heat - Kansas City, Missouri, United States
Impact: Impact data not available
Arlington, TX
July 12, 2020
Extreme Heat - Southern United States
Impact: Impact data not available
Las Vegas, NV
August 12, 2019
Extreme Heat - Nevada, Arizona and California, United States
Impact: Impact data not available
San Antonio, TX
June 18, 2019
Extreme Heat - Southern and Central Texas, United States
Impact: Impact data not available
Fresno, CA
February 5, 2019
Extreme Temperatures - San Joaquin Valley California, United States
Impact: Impact data not available
New York, NY
September 3, 2018
Extreme Heat - Northeastern United States
Impact: Impact data not available
Atlanta, GA
June 24, 2018
Extreme Heat - Alabama, Georgia, and South Carolina, United States
Impact: Impact data not available
New York, NY
June 17, 2018
Extreme Heat - East Coast, United States
Impact: Impact data not available
Oakland, CA
June 7, 2015
Heat Advisory - California, United States
Impact: Impact data not available
Portland, OR
June 7, 2015
Heat Advisory - Washington/Oregon, United States
Impact: Impact data not available
Cities with Highest Extreme Heat Risk
| Rank | City | Risk Score |
|---|---|---|
| 1 | Chicago, IL | 9 |
| 2 | Houston, TX | 9 |
| 3 | Phoenix, AZ | 9 |
| 4 | Philadelphia, PA | 9 |
| 5 | Dallas, TX | 9 |
| 6 | Las Vegas, NV | 9 |
| 7 | Tucson, AZ | 9 |
| 8 | Mesa, AZ | 9 |
| 9 | New York, NY | 7 |
| 10 | Los Angeles, CA | 7 |
| 11 | San Antonio, TX | 7 |
| 12 | San Diego, CA | 7 |
| 13 | San Jose, CA | 7 |
| 14 | Austin, TX | 7 |
| 15 | Jacksonville, FL | 7 |
Stay Informed
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